/* Galaxia Autonomous Systems Network — platform shell */
:root {
  --gasn-bg: #07090f;
  --gasn-bg-elev: #0d121c;
  --gasn-bg-panel: #111827;
  --gasn-border: rgba(255, 255, 255, 0.08);
  --gasn-text: #e8edf5;
  --gasn-muted: #8b95a8;
  --gasn-accent: #FF5252;
  --gasn-accent-dim: #B71C1C;
  --gasn-nominal: #3dd68c;
  --gasn-degraded: #e8a838;
  --gasn-attention: #ff5c5c;
  --gasn-info: #5b8def;
  --gasn-sidebar: 260px;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--gasn-bg);
  color: var(--gasn-text);
  font-family: var(--font-body);
  line-height: 1.5;
  min-height: 100%;
}

a { color: inherit; }

.gasn-app {
  display: grid;
  grid-template-columns: var(--gasn-sidebar) 1fr;
  min-height: 100vh;
}

.gasn-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: linear-gradient(180deg, #0a0e16 0%, #07090f 100%);
  border-right: 1px solid var(--gasn-border);
  padding: 1.25rem 1rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.gasn-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  padding: 0.25rem 0.5rem;
}

.gasn-brand img { width: 32px; height: 32px; }
.gasn-brand strong {
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  display: block;
  line-height: 1.2;
}
.gasn-brand span {
  font-size: 0.7rem;
  color: var(--gasn-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.gasn-env-banner {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.55rem 0.7rem;
  border: 1px solid rgba(232, 168, 56, 0.45);
  color: var(--gasn-degraded);
  background: rgba(232, 168, 56, 0.08);
  border-radius: 6px;
}

.gasn-nav-group { margin-top: 0.25rem; }
.gasn-nav-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--gasn-muted);
  padding: 0.5rem 0.7rem 0.35rem;
  text-transform: uppercase;
}

.gasn-nav a {
  display: block;
  text-decoration: none;
  padding: 0.45rem 0.7rem;
  border-radius: 6px;
  color: var(--gasn-muted);
  font-size: 0.9rem;
  transition: background 0.15s, color 0.15s;
}
.gasn-nav a:hover,
.gasn-nav a.active {
  background: rgba(255, 82, 82, 0.1);
  color: var(--gasn-text);
}
.gasn-nav a.active {
  border-left: 2px solid var(--gasn-accent);
  padding-left: calc(0.7rem - 2px);
}

.gasn-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.gasn-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.5rem;
  border-bottom: 1px solid var(--gasn-border);
  background: rgba(7, 9, 15, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.gasn-topbar h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
}

.gasn-mobile-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--gasn-border);
  color: var(--gasn-text);
  padding: 0.4rem 0.65rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
}

.gasn-content {
  padding: 1.5rem;
  width: 100%;
  max-width: none;
}

.sim-banner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: baseline;
  padding: 0.85rem 1rem;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(91, 141, 239, 0.35);
  background: rgba(91, 141, 239, 0.06);
  border-radius: 8px;
}
.sim-banner strong {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--gasn-info);
}
.sim-banner p {
  margin: 0;
  color: var(--gasn-muted);
  font-size: 0.875rem;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.stat {
  background: var(--gasn-bg-elev);
  border: 1px solid var(--gasn-border);
  border-radius: 8px;
  padding: 1rem;
}
.stat .value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.1;
}
.stat .label {
  font-size: 0.75rem;
  color: var(--gasn-muted);
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.panel {
  background: var(--gasn-bg-elev);
  border: 1px solid var(--gasn-border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.panel h2, .panel h3 {
  font-family: var(--font-display);
  margin: 0 0 0.75rem;
  font-weight: 600;
}
.panel p.lead {
  color: var(--gasn-muted);
  margin: 0 0 1rem;
  max-width: 52rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.domain-tile {
  display: block;
  text-decoration: none;
  background: var(--gasn-bg-panel);
  border: 1px solid var(--gasn-border);
  border-radius: 8px;
  padding: 1.1rem;
  transition: border-color 0.15s;
}
.domain-tile:hover { border-color: rgba(255, 82, 82, 0.45); }
.domain-tile h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1rem;
}
.domain-tile p {
  margin: 0;
  color: var(--gasn-muted);
  font-size: 0.85rem;
}
.domain-tile .count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gasn-info);
  margin-top: 0.75rem;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.4rem;
  vertical-align: middle;
}
.status-dot.nominal, .status-dot.operational, .status-dot.green { background: var(--gasn-nominal); }
.status-dot.degraded, .status-dot.amber, .status-dot.yellow { background: var(--gasn-degraded); }
.status-dot.attention, .status-dot.red, .status-dot.offline, .status-dot.maintenance { background: var(--gasn-attention); }
.status-dot.info, .status-dot.simulated, .status-dot.blue { background: var(--gasn-info); }

.table-wrap { overflow-x: auto; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
table.data th, table.data td {
  text-align: left;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--gasn-border);
}
table.data th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gasn-muted);
  font-weight: 500;
}
table.data a { color: var(--gasn-info); text-decoration: none; }
table.data a:hover { text-decoration: underline; }

.kv {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 0.5rem 1rem;
  font-size: 0.9rem;
}
.kv dt { color: var(--gasn-muted); font-family: var(--font-mono); font-size: 0.75rem; }
.kv dd { margin: 0; }

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.65rem 1.1rem;
  border-radius: 6px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gasn-accent), var(--gasn-accent-dim));
  color: #fff;
}
.btn-secondary {
  background: transparent;
  border-color: var(--gasn-border);
  color: var(--gasn-text);
}
.btn-ghost {
  background: transparent;
  border-color: rgba(91, 141, 239, 0.4);
  color: var(--gasn-info);
}
.btn-row { display: flex; flex-wrap: wrap; gap: 0.65rem; }

.hero-platform {
  padding: 2.5rem 0 1.5rem;
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, rgba(255, 82, 82, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 80% 10%, rgba(91, 141, 239, 0.08), transparent);
  margin: -1.5rem -1.5rem 1.5rem;
  padding: 2.5rem 1.5rem 2rem;
  border-bottom: 1px solid var(--gasn-border);
}
.hero-platform .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gasn-accent);
  margin: 0 0 0.75rem;
}
.hero-platform h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  margin: 0 0 0.75rem;
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 18ch;
}
.hero-platform .lead {
  font-size: 1.1rem;
  color: var(--gasn-muted);
  max-width: 36rem;
  margin: 0 0 1.5rem;
}

.map-sim {
  position: relative;
  height: 420px;
  background:
    linear-gradient(rgba(91, 141, 239, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 141, 239, 0.06) 1px, transparent 1px),
    #0a1018;
  background-size: 40px 40px, 40px 40px, auto;
  border-radius: 8px;
  border: 1px solid var(--gasn-border);
  overflow: hidden;
}
.map-marker {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid #fff;
  transform: translate(-50%, -50%);
  cursor: pointer;
}
.map-marker.operational { background: var(--gasn-nominal); }
.map-marker.degraded { background: var(--gasn-degraded); }
.map-marker.maintenance, .map-marker.offline { background: var(--gasn-attention); }
.map-marker.simulated { background: var(--gasn-info); }

.oversight-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.85rem;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--gasn-border);
  border-radius: 8px;
}
.oversight-bar button {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.55rem 0.85rem;
  border-radius: 4px;
  border: 1px solid var(--gasn-border);
  background: var(--gasn-bg-panel);
  color: var(--gasn-text);
  cursor: pointer;
}
.oversight-bar button.danger {
  border-color: rgba(255, 92, 92, 0.5);
  color: var(--gasn-attention);
}
.oversight-bar button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.boundary-card {
  border: 1px dashed rgba(232, 168, 56, 0.4);
  background: rgba(232, 168, 56, 0.04);
}
.boundary-card .kv dt { min-width: 0; }

.code-block {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: #05070c;
  border: 1px solid var(--gasn-border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  white-space: pre;
  color: #b8c4d9;
}

.muted { color: var(--gasn-muted); }
.mono { font-family: var(--font-mono); font-size: 0.8rem; }

.empty-state {
  padding: 1.25rem 0.25rem;
  max-width: 36rem;
}
.empty-state h3 {
  font-family: var(--font-display);
  margin: 0 0 0.5rem;
  font-size: 1rem;
}
.empty-state p { margin: 0 0 0.5rem; }

.rel-chain {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--gasn-muted);
  margin: 0 0 1rem;
  line-height: 1.6;
}
.rel-chain a { color: var(--gasn-info); text-decoration: none; }
.rel-chain a:hover { text-decoration: underline; }

@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .gasn-app { grid-template-columns: 1fr; }
  .gasn-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(280px, 86vw);
    z-index: 40;
    transform: translateX(-105%);
    transition: transform 0.2s ease;
  }
  .gasn-sidebar.open { transform: translateX(0); }
  .gasn-mobile-toggle { display: inline-block; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .kv { grid-template-columns: 1fr; gap: 0.15rem; }
  .kv dt { margin-top: 0.5rem; }
  .gasn-content { padding: 1rem; }
  .hero-platform { margin: -1rem -1rem 1rem; padding: 1.75rem 1rem; }
  .map-sim { height: 280px; }
  table.data thead { display: none; }
  table.data tr {
    display: block;
    border: 1px solid var(--gasn-border);
    border-radius: 8px;
    margin-bottom: 0.75rem;
    padding: 0.5rem;
  }
  table.data td {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    border: none;
    padding: 0.35rem 0.25rem;
  }
  table.data td::before {
    content: attr(data-label);
    color: var(--gasn-muted);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
  }
}